Authors
Radu Gavrea, R Hirian, S Mican, D Benea, O Isnard, M Coldea, V Pop
Publication date
2017/3/1
Journal
Intermetallics
Volume
82
Pages
101-106
Publisher
Elsevier
Description
The structural, electronic and magnetic behavior of the as-cast and annealed Mn52Al46Ti2 and Mn50Al46Ti4 alloys have been studied through electronic band structure calculations, X-ray diffraction and magnetic measurements in the temperature range 4–850 K and magnetic field up to 7 T. Band structure calculations show a preference for Ti atoms to occupy the Mn sites in the plane of Al atoms with their magnetic moments (−0.68 μB/Ti) coupled antiparallel relative to the Mn magnetic moments in the plane of Mn atoms (2.33 μB/Mn). The as-cast and annealed samples were phase mixtures with different values of the hard ferromagnetic τ phase content. Except the as-cast and annealed at 1050 °C Mn52Al46Ti2 alloys, all the analyzed samples include, along with the τ and γ2 phases, a soft κ phase (CsCl - structure type) with TC around 530 K. The best magnetic characteristics were obtained for Mn52Al46Ti2 alloy …
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